If the endpoints AB of have the coordinates A(9, 8) and B(-1, -2), what is the midpoint of ? AB

(4,3)

Step-by-step explanation:

The coordinate of midpoint of two end points (x1,y1) and (x2, y2) is given by

Here, x1=9 y1=8

x2=-1 and y2=-2

So the midpoint of AB is

(4,3)

step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.